Pencil-sharpener.



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Paipented Sept. 15, w08.

ENCBL SHARPENEB.. A PPLIGATION FILED JAN. e, 1908.

QM@ www YA. T; PETERSON. PENCIL SHARPENER.

APPLICATION FILED JAN. 6, 1908.

' l Patented Sept. 15, 1908.

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Specicaton of Letters Patent.

Patented sept. 15, 1908..

Application filed. January 6, 5.9113. Serial ll'alllll.

To all whom it concern; 1

BeA it known that l, Ari-un T. Prirnaserr, residing in Racine, in the county of Racine and State ol Wisconsin, have invented new andl useful improvements inv Fendi-Sharpeners, of which thi-)following is a description, reference' being hadV to the accompemying drawings, which are a part of this specilica tion.

This invention relates to pencil Sharpeners and has for its object to provide a means for Iquickly and' easily giving a point to a lead pencill by alreciprocatin-g motion of a cutter which projects into the pencil' support and' cuts shavings from the pencil therein.

featureof novelty'of the invention is the provision of means for adjusting the cutter to bring al new edge to 'the `cutting position when tl'reusedr edge has become dull.

hnother object of this invention is to pro# vide a pencil' Sharpener which will constitute an oma-mntald'esk iixtura the cutter portion being removable and adapted to be carriedin the pocket.

'Another object" ofthi's invention is to improve upon details of construction whereby' the expense of manufacture is reduced and` the efficiency of the device is increased.

lilith the above and other objects in view theiinventionconsists in the pencil Sharpener herein claimed, its parts and combinations of parts, 'and all equivalents.

Referring to the accompanying drawings in which like characters of reference indicate the same parts in the several views:

Figure 1 is a central longitudinal sectional view o a pencil Sharpener mounted -on its tray support and constructed in accordance with this invention; 2 is a plan view thereof; Fig. 3 is an enlarged plan view of the --pencil Sharpener removed from the support; Fig. e is a rear end elevation thereof; Fie. 5 is a sectional view taken on the plane of line55 of Fig. 3,' Fig. 6 is a side elevationoibl the Slide; Fig. 7 is a sectional view oi the cutter member and its associated parts; Fig. .8 is a front elevation of the pencil sharp ener with the end portion broken away for learness of illustration; and, Fig. 9 is a side elevationot the plate member of the cutter, showing the shape of its side wings. lny thesedmwings 10 represents the casing whichis preferably formed of sheet metal bent toflorm a wedge-shaped Shell with one cud ll bent upto form a stop'for the end of a pencil and having a plate 1-2secured at its other endwithan opening to receive the pencil. The plate 1.2 Lprojects below the bottom of theA casing an .is adapted to receivea screw 13 or other securing means forfastening the pencil Sharpener to a correspondingly shaped project-ion on a tray like support 14.

A tube 15, preferably of spring metal', is *mountedv within the casing and hasl a illin 16 of Babbitt metal or other suitable-materia at its lower end shaped to form a conicaly pocket to lit the pointed end of the pencil during the sharpening operation. A plate 17 is secured to the tube 15 at an angle therel plate 1-7 forms the top for the casing and together with the inturnedv side edges or iianges of thel casing forms a guide for a slide 18 carrying the cutter member 19, the plate being supported by downwardly bent Side flanges 17 which bear on the bottom ofthe casing as shown in Fig. 5.

The slide desirably consists of a strip of sheet metal with its, ends wider than its intermediate portion to lit beneath the inturned edges of the casing and its intermediate portion bent to form anarch as clearly shown'in Figs. 1 and 6. 'The'cutter member 19 is a disk shaped blade which has removably iXed on it a worm wheel 20 and is rotatably mounted on a Screw 21 which threads into the beveled front end of the slide, the rear edgeV of the cutter member 19 being embedded in a suitably shaped recess of the arched portion of the slide to assure its firm seating on the slide. A worm 22 is journaled inears 23 bent up from the sides of the slide and meshes `w1ththeworm wheel 20, having a linurled wheel 24 on its end by which it may be turned tol change lthe position of the cutter 19.

In order to facilitate the operation of the device the slide is preferably provided with a thumb piece 25 which is secured to the arched portion thereof and is free to swing onits connecting screw to a position Where it will stand above the casing instead of projecting laterally therefrom, as shown, and this is for conweiiience -in carrying in the pocket. In use the thumb piece is swung to l its lateral position in engagement with a stop pin 26 on the Slide.

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socket. Of course the Babbitt metal isy .clasping Wit The rearend of the tube'15 is slotted to divide it into s ring'members and permit of its pressure the pencil inserted therein, whether the encil is large or small.

The parts of the sli e which iit in the guide ways between the platel? and the inwardly turned {ianges of the casing have sufficient play in these guide ways to permit of a lib eral movement ofthe slide until near the end of the downward stroke of the slide, where the space between the plate 17 and the said flanges is reduced to prevent more than the amount of play for the lower end of the slide that is necessary for its travel. If the guide for the slide is snug throughout its length the encil may beturned when the slide is in its ower position and by presenting an uncut surface thereof to the path of the blade the slide may be bound thereby. The loose fit of the slide except at the extreme end of its movement avoids this possibility,'while affording the close workingl that is necessary at the point ofthe pencil where'the graphite is being cut.

The filling 16 of Babbitt metal, besides constituting a support fitting the point of the pencil While it is being sharpened to prevent its breaking, also forms shoulders within the tube 15 to limit the position of a pencil which is 4being sharpened for the irst time land preventing its beingwedged in the tapering curved. on its upper surface to iit the cutter blade 19 during its travel, and this Babbitt metal incidentally constitutes a means for securing the lower end of the tube-and the plate 17 and tlic lower endof the casing together, becoming a solder for this purpose.

The end ol the casing forms astop for the point of the pencil to prevent the pencil bey ing jammed into the socket of the Babbitt metal.

By means of the adjustment provided for the cutter it may be turned to present a new sharp edge to the working position when it has become too dull for use, and the mounting thereof is such that it may be quickly and easily replaced with a new cutting disk by removing the screw 21 and separating the old 'disk from the worm wheel and substituting .the new disk in place thereof.

The disk is separated from the worm wheel by merely slipping the disk oi of the connecting pins which are loose therein.

The tray is a desirable feature of the device for desk use, forming a receptacle for containing shavings and dust 'and becoming an ornamental su port for the Sharpener proper to rigidly ho d it in place during operation. Whenever desired tlie pencil sharpener may be removed from the tray and carried in the pocket, when it may be operated While held in the hand.

What claim as my invention is Vl. A sheet metal pencil Sharpener, coniprising a casing, a pencil-engaging tube con- .tained in the casing and having an opening, a sheet metal plate secured to the tube at an angle thereto and having an opening regis- -teringwith the opening of the tube, .a slide movable on the late, anda cutter carried by the slide and a apted to engage a pencil in the tube through the registering openings.

to receive and support the point of the pencil and constituting a means for securing the tube and the late and the casing together.

3. A pene' Sharpener, comprising a pencilengaging tube having an opening, a plate secured at an angle thereto having an opening registering with the o em'ng of the tube, a slide movably mounte on the plate, a cutter carried by the slide yand adapted to engage a pencil contained in the tube through the 'reg-l istering openings, and a iilling in the end of the tube forming a conical socket to receive and support the point of the pencil and constitut'ing a means for connecting the .plate and tube together.

4. A pencil Sharpener, com rising a ca'sing, a pencil-engaging tube wit in the 'casing having an opening, a plate secured to the tube at an angle thereto and having an opening registering with the opening of the tube,

flanges on the casing forming a guideway with the plate, a slide movably mounted in the guideway, and akcutter carried by the sli'de and adapted to engage a pencil in the tube through the registering openings.

5. A pencil Sharpener, comprising a casing, a pencil-engaging tube thereinhaving an opening, a plate connected to the tube at an angle theretoand aving an opening register-v ing with the opening of the tube, flanges on the casing forming a guideway with the` platre, a slide movably mounted in the guide*A way, a cutter carried by the slide and adapted to engage a pencil in the ltube through/the iegisteriiig openings, said flanges being Icloser to the plate near the end of the stroke of the slide.

6. A pencil Sharpener, com rising a pencil support, a slide, a disk shape cutter carried by the slide and adapted to engage a pencil in the pencil support and screw means for turning the rotary cutter to present a new edge to the cutting position.

7. A pencil sharpener, com rising a pencil support, a slide, a disk shape cutter mounted on the slide, a worm wheel carried by the cutter, and-a worm mounted on'v the slide and meshing with the Worm Wheel by means of which the cutter may be turned to present a new edge to the cutting position.

8. A pencil Sharpener, com rising a pencil support, a recessed slide, a dis shaped cutter carried by the slide and adapted to engage a pencil in the pencil support with its opposite edge embedded in the recessed portion of the slide, and means for adjusting the cutter.

` meshing with the Worm Wheel for 9. A pencil Sharpener, comprisinga pencil support, an arched slide havinga beveled end,

and a recess a screw` threaded in the beveledend of the slide, a disk sha ed cutter mounted on the screwtvith its e ge engaged inthe recess in the arch shaped portion of the slide andfadapted to engage a pencil in the pencilsupport, a Worm Wheel carried by the cutter, an a Worm mounted on the slide and changing the position of the cutter.

10. A pencil Sharpener, comprising a cas- I ing,` a split tube therein forming a pencil engaging support having an opening, a plate secured to the tube at an angle thereto and `having an opening registering with the opening of the tube, side anges on the plate bearing on the bottom. of the casing, a filling in the end of the tube forming a conical socket to fit thepoint of 'the pencil, flanges on the casing forming a guideway with the plate, an arched slide mounted in the guideway and provided With a beveled end, and a recess a screw threaded in the beveled end of theI slide, a disk shaped cutter mounted on the screw and having its edge fitting in there- .cess in the arch shaped portion of the slide, a

Worm Wheel on the cutter a Worm mounted In testimony whereof, I' aix my signau ture, in presence of two Witnesses. ARNE T. PETERSON. Witnesses:

A. H. WADEWITZ, CHAS. G. WILSON. 

